Table 1 Baseline characteristics between chemotherapy and non-chemotherapy groups
From: Multiply robust estimator for the difference in survival functions using pseudo-observations
| Â | Non-chemotherapya | Chemotherapy |
|---|---|---|
Survival (months) | 44.61 ± 18.20 | 45.40 ± 16.82 |
Death | ||
 Yes | 463 (21.7) | 1876 (22.1) |
 No | 1673 (78.3) | 6601 (77.9) |
Marital Status | ||
 Yesb | 1190 (55.7) | 5176 (61.1) |
 Noc | 946 (44.3) | 3301 (38.9) |
Laterality | ||
 Left | 1105 (51.7) | 4333 (51.1) |
 Right | 1031 (48.3) | 4144 (48.9) |
Race | ||
 Black | 409 (19.1) | 1798 (21.2) |
 Non-blackd | 1727 (80.9) | 6679 (78.8) |
Grade | ||
 Well/Moderately | 1545 (72.3) | 7302 (86.1) |
 Poorly/Undifferentiated | 591 (27.7) | 1175 (13.9) |
Stage | ||
 I/II | 1926 (90.2) | 6551 (77.3) |
 III/IV | 210 (9.8) | 1926 (22.7) |
Distant metastasis | ||
 Yes | 101 (4.7) | 727 (8.6) |
 No | 2035 (95.3) | 7750 (91.4) |
Age | ||
 \(<\) 50 | 382 (17.9) | 3054 (36.0) |
 \(\ge\) 50 | 1754 (82.1) | 5423 (64.0) |
Radiotherapy | ||
 Yes | 783 (36.7) | 5022 (59.2) |
 No | 1353 (63.3) | 3455 (40.8) |
Surgery | ||
 Yes | 1994 (93.4) | 8097 (95.5) |
 No | 142 (6.6) | 380 (4.5) |